$280+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop13h 25m
Thu 9/244:00 pm -
1 stop31h 45m
Deal found 8/8![Scandinavian Airlines logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm -
1 stop13h 25m
Fri 9/256:10 am -
1 stop17h 35m
Deal found 8/8![Scandinavian Airlines logo]()
$583
This Mytrip deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:00 am -
2 stops29h 05m
Wed 9/99:20 pm -
3 stops33h 44m
Deal found 8/5![Multiple Airlines logo]()
$595
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:55 pm -
1 stop23h 35m
Mon 9/289:15 pm -
2 stops26h 30m
Deal found 8/9![Scandinavian Airlines logo]()
$601
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm -
1 stop32h 40m
Thu 9/249:15 pm -
2 stops26h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$602
This Trip.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:55 pm -
1 stop13h 25m
Mon 9/219:05 pm -
1 stop26h 40m
Deal found 8/6![Scandinavian Airlines logo]()
$615
This Mytrip deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:00 am -
3 stops26h 00m
Tue 9/296:50 pm -
2 stops32h 09m
Deal found 8/9![Multiple Airlines logo]()
$623
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop32h 40m
Tue 9/2911:15 am -
1 stop12h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$626
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop32h 40m
Mon 9/289:15 pm -
2 stops26h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$633
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop23h 35m
Fri 9/257:15 am -
2 stops16h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$552
This Turkish Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:15 pm -
1 stop18h 40m
Tue 9/2212:05 pm -
1 stop39h 15m
Deal found 8/6![Turkish Airlines logo]()
$883
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm -
2 stops21h 55m
Thu 9/249:15 pm -
2 stops26h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$609
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
2 stops21h 55m
Sat 9/267:15 pm -
2 stops28h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$690
This Turkish Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:05 pm -
1 stop37h 05m
Tue 11/177:05 pm -
1 stop32h 05m
Deal found 8/8![Turkish Airlines logo]()
$883
This Scandinavian Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:55 am -
2 stops18h 25m
Tue 9/296:10 am -
1 stop17h 35m
Deal found 8/9![Scandinavian Airlines logo]()
$791
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm -
1 stop13h 25m
Tue 9/2911:15 am -
1 stop12h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$837
This Scandinavian Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/287:20 am -
2 stops27h 00m
Mon 2/16:15 am -
2 stops26h 11m
Deal found 8/6![Scandinavian Airlines logo]()
$865
This Scandinavian Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:15 am -
2 stops32h 15m
Thu 10/2211:15 am -
2 stops21h 34m
Deal found 8/4![Scandinavian Airlines logo]()
$871
This Scandinavian Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:20 am -
2 stops32h 10m
Tue 9/111:15 am -
1 stop12h 30m
Deal found 8/7![Scandinavian Airlines logo]()
$881
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated August 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:00 am -
2 stops29h 05m
Wed 9/99:20 pm -
3 stops33h 44m
Deal found 8/5![Multiple Airlines logo]()
$595
This Trip.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:55 pm -
1 stop13h 25m
Mon 9/219:05 pm -
1 stop26h 40m
Deal found 8/6![Scandinavian Airlines logo]()
$615
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm -
1 stop13h 25m
Fri 9/256:10 am -
1 stop17h 35m
Deal found 8/8![Scandinavian Airlines logo]()
$583
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm -
1 stop32h 40m
Thu 9/249:15 pm -
2 stops26h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$602
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop13h 25m
Thu 9/244:00 pm -
1 stop31h 45m
Deal found 8/8![Scandinavian Airlines logo]()
$545
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop32h 40m
Tue 9/2911:15 am -
1 stop12h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$626
This Scandinavian Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:55 pm -
1 stop32h 40m
Mon 9/289:15 pm -
2 stops26h 30m
Deal found 8/8![Scandinavian Airlines logo]()
$633
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:55 pm -
1 stop23h 35m
Mon 9/289:15 pm -
2 stops26h 30m
Deal found 8/9![Scandinavian Airlines logo]()
$601
This Mytrip deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:00 am -
3 stops26h 00m
Tue 9/296:50 pm -
2 stops32h 09m
Deal found 8/9![Multiple Airlines logo]()
$623
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:25 pm -
3 stops38h 00m
Deal found 8/9![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm -
3 stops33h 35m
Deal found 8/9![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:35 pm -
3 stops23h 15m
Deal found 8/6![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:00 pm -
2 stops20h 30m
Deal found 8/9![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:25 pm -
2 stops23h 55m
Deal found 8/9![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:25 pm -
2 stops25h 10m
Deal found 8/9![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:25 pm -
2 stops40h 05m
Deal found 8/9![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:25 pm -
3 stops24h 35m
Deal found 8/8![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/278:21 am -
3 stops26h 49m
Deal found 8/5![Multiple Airlines logo]()
$364
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $545 (Scandinavian Airlines) |
One-way from | $280 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $932 |
Good one-way deal | $531 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 9, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 9/20
3:55 pm-1:30 am
1 stop23h 35m
Helsinki-Vantaa
Fri 9/25
7:15 am-1:45 pm
2 stops16h 30m
$552
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sat 9/19
3:55 pm-11:50 pm
2 stops21h 55m
Helsinki-Vantaa
Thu 9/24
9:15 pm-1:45 pm
2 stops26h 30m
$609
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 9/20
3:55 pm-11:50 pm
2 stops21h 55m
Helsinki-Vantaa
Sat 9/26
7:15 pm-1:45 pm
2 stops28h 30m
$690
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 9/23
10:55 am-3:20 pm
2 stops18h 25m
Helsinki-Vantaa
Tue 9/29
6:10 am-1:45 pm
1 stop17h 35m
$791
Quickest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Fri 9/18
3:55 pm-3:20 pm
1 stop13h 25m
Helsinki-Vantaa
Tue 9/29
11:15 am-1:45 pm
1 stop12h 30m
$837
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Thu 1/28
7:20 am-8:20 pm
2 stops27h 00m
Helsinki-Vantaa
Mon 2/1
6:15 am-10:26 pm
2 stops26h 11m
$865
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 9/30
7:15 am-1:30 am
2 stops32h 15m
Helsinki-Vantaa
Thu 10/22
11:15 am-10:49 pm
2 stops21h 34m
$871
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Tue 8/25
7:20 am-1:30 am
2 stops32h 10m
Helsinki-Vantaa
Tue 9/1
11:15 am-1:45 pm
1 stop12h 30m
$881
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Thu 9/17
7:15 pm-11:55 pm
1 stop18h 40m
Helsinki-Vantaa
Tue 9/22
12:05 pm-5:20 pm
1 stop39h 15m
$883
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Tue 11/10
7:05 pm-6:10 pm
1 stop37h 05m
Helsinki-Vantaa
Tue 11/17
7:05 pm-5:10 pm
1 stop32h 05m
$883
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to HEL?
Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 9, 2026.
When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated August 9, 2026.
Get a feel of what it's like to fly with Delta,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Helsinki?
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Alternative routes for Seattle to Helsinki
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Other flights to Helsinki
Explore flights to Helsinki departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
Seattle and Helsinki flights
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Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
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Top 4 airlines flying from Seattle to Helsinki
Discover the top 4 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$353 | Average$585 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$514 | Average$887 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$526 | Average$1,020 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$790 | Average$1,183 | FlexibilityNo cancel fee | On-time76% |